Here's a preliminary schematic...a better one may follow, when I figure out the "conventions"
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This pressure sensing device consists of an Arduino board, a bread board, pressure sensor, a few LEDs and some wire. The device helps to visualize the ambient air pressure. The lower the air pressure, the lower the number of glowing LEDs and the higher the air pressure, the higher the number of lit LEDs. Lower air pressure usually means that stormy weather is more likely, and higher pressure usually indicates fair or sunny weather.
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